In this mode, up to four additional players with their own Nintendo DS wirelessly connected to the Wii (the "Roadies") can assist the other players using instrument controllers. The Roadies can create setlists from the DS, or engage in gameplay through "spells" that improve the performance of the player they are assigned to. Alternatively, in Roadie Battle mode, the Roadies can attempt to distract another player while at the same time removing the distractions placed on their player by another Roadie. Warriors of Rock includes an improved version of a song creation tool, allowing players to share their songs using the online "GHTunes" services. Improvements include the ability to lay down note tracks directly while playing one of the instrument controllers and a larger number of guitar, bass, and drum samples to use. The player can use the built-on GH Studio to create their own music, save for vocals, to share with others on the GH Tracks service, either by laying down tracks one note at a time, or by jamming along to a pre-defined beat. Players can create their own customized rocker to use in Quickplay+ or online modes through the character creator, or use either the regular form or the Warrior version of the eight on-disc characters. Characters There are no characters of real-life musicians in the game due to ongoing legal issues with the likenesses of musician celebrities in Guitar Hero 5 and Band Hero. As such, only eight fictional guitarists are initially featured in the game, two of them being entirely new characters. Each one has a special power that helps the player improve their score. In Quest Mode, the characters must obtain a certain number of "power stars" in order to transform into their warrior state, whereupon their power is upgraded into a "+" state which either boosts the effect or adds bonus effects. Collecting stars will also unlock additional characters for Quickplay mode, ranging from other past characters to Arthas Menethil from the Warcraft franchise. Development After weak sales in 2009 of several titles in the Guitar Hero series, Activision proceeded to make several changes with their internal development teams. The company dissolved RedOctane, bringing in some of the staff directly into Activision. Activision further shuttered Neversoft's Guitar Hero division, pending the completion of Guitar Hero: Warriors of Rock, with further development in the series to be created by some former Neversoft members and